docs: def by_occupied_housing_units(self,
                                    lower=-1,
                                    upper=2 ** 31,
                                    zipcode_type=ZipcodeType.Standard,
                                    sort_by=SimpleZipcode.occupied_housing_units.name,
                                    ascending=False,
                                    returns=DEFAULT_LIMIT):
          """
          Search zipcode information by occupied house of units.
          """
          return self.query(
              occupied_housing_units_lower=lower,
              occupied_housing_units_upper=upper,
              sort_by=sort_by, zipcode_type=zipcode_type,
              ascending=ascending, returns=returns,
          )